document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=964767>Question 964767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How would I solve this by substitution? I keep coming up with the wrong answer.\r<BR>\n" );
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document.write( "4x+y=-5<BR>\n" );
document.write( "5x-3y=15 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #589630 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=589630\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4x+y=-5<BR>\n" );
document.write( "5x-3y=15<BR>\n" );
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document.write( "rearrange the 1st equation<BR>\n" );
document.write( "4x + y = -5<BR>\n" );
document.write( "y = -4x - 5<BR>\n" );
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document.write( "replace y with (-4x-5) in the 2nd equation<BR>\n" );
document.write( "5x - 3(-4x-5) = 15<BR>\n" );
document.write( "5x + 12x + 15 = 15<BR>\n" );
document.write( "17x = 15 - 15<BR>\n" );
document.write( "17x = 0<BR>\n" );
document.write( "x = 0<BR>\n" );
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document.write( "Find y using the 1st equation;<BR>\n" );
document.write( "4(0) + y = -5<BR>\n" );
document.write( "Y = -5<BR>\n" );
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document.write( "Solution: x = 0, y = -5<BR>\n" );
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document.write( "Check this in the 2nd equation<BR>\n" );
document.write( "5(0) - 3(-5) = 15<BR>\n" );
document.write( "15 = 15 </SPAN>\n" );
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